Magnifying presser foot



ZLSSE Aug@ 33 394@ c. H. .JoHANsoN ET AL.

MAGNIFYING PRESSER FOOT Filed fri'l 1o, 1959 Patented ug. 13, 1940 lPATENT ol-Flca MAGNIFYIN G PRESSER F001.

Carl Hugo Johanson and Richard A. Weber, Los Angeles, Calif.; Oscar W. Bouge executor of Carl H. Johanson, deceased Application April 10, 1939, Serial No. 267,063

2 Claims.

This invention is a presser foot for sewing machines and various other adaptations where it is desirable to have a presser device active on given work.

6 It is very trying on the eyes of sewing machine operatives to closely follow the stitching passing under the usual opaque or blinding presser foot,.

parent presserfoot will suffice/in other and nne work it is desirable that the work or stitch be con- 20 slderably magnied to the end that a very great relief is felt by the operative where constant attention for considerable periods of time is unavoidable.

The invention consists of certain advancements 25 in this art as set forth in the ensuing disclosure and having, with the above, additional objects and advantages as hereinafter developed, and whose constructions, combinations and details of means, and the manner of operation will be made mani- 30 fest in the description of the herewith illustrated embodiment; it being understood that modifications, variations and adaptations may be resorted to within the scope, spirit and principle of the invention as it is more directly claimed hereinbelow. Figure l is a perspective of the appliedpresser foot of one embodiment.

Figure 2 is a side elevation of the presser foot, partly sectioned of another embodiment.

'Ihe presser foot of this invention includes a o rearward end or body 2 of any desired shape and size for ilxedattachment to the lower end of a presser foot bar l or other machine element to which a work holding piece is normally used and disposed in normal viewof the machine operative. Forwardly oftheattaching bodyor end 2 there (Cl. Ilz- 235) is provided or suitably formed a substantial transparent or lens part 4 focusing on one side on the stitch or work W, and reproducing an image at a suitable focal distance so as to be at an eye distance most comfortable to the operative hav- 5 ing to constantly watch the work, and to entirely n eliminate the usual close and straining position of the eyes incident to the use of an opaque, presser foot element.

The presser foot is preferably made in one inteil) gral unit of shatter-proof glass of the desired transs parency so that it will be capable to stand the shock of being repeatedly snapped down onto the 'work and to take the load of the usual pressure spring. p

A feature of the invention is that the rear sur, face of the magnifying lens part 4 is elevated above the plane of the work so that its transparency will not be diminished because of attrition or abrasion marks such as may be produced n on the surface of the work-engaging toe oi the presser foot. v

Figure 2 shows an inserted disc lens l* disposed at one side of a needle aperture 2* in the body 2 and the focal axis of the lens intersecting the 25 path of the needle at substantially the plane of the stitch at the presser foot.

What is claimed is: Y

l. A stitch magnifying device including a presser foot body having an aperture therein for a0 needle reciprocation' and a magnifying lens mounted in said body and having its focal axis substantially intersecting a part of the aperture at about the stitch plane of the presser foot and the axis of the needle path. 35

2. A presser foot having a needle aperture, and a magnifying element rigidly incorporated as a 'part of the presser foot anddisposed to one side cam. nooo JoHANsoN. aleman A. waarin. s 

